Fertilization in vegetable gardens can be divided into base fertilizer and topdressing according to the time of fertilization. According to the characteristics of fertilizer fertilization period and the local conditions at the time, the types and dosages of fertilizers for base fertilizer topdressing are determined. (1) Base fertilizer: organic fertilizer has slow effect and long-term application to soil, it needs to be decomposed to release nutrients and about 80% of organic matter is humified to form humus humus. It plays an important role in sending soil physical and chemical properties. Fertilizer is generally applied as a base fertilizer. Fertilizers such as calcium magnesium phosphate and trace elements in fertilizers are also commonly used as base fertilizers. The nitrogen and potassium chemical fertilizers have a large amount of potassium in the soil. Nitrogen is an element that vegetables often need. Therefore, 1/3~1\2 of the amount of nitrogen in the open field cultivation is used as the base fertilizer. When applying ammonium chloride and potassium chloride fertilizers, it is necessary to control the chlorine in the amount of chloride fertilizer to dissolve and diffuse, and it is not easy to adsorb the soil colloid. It is easy to cause physiological obstacles to vegetables. Therefore, potassium chloride is suitable for a crop with strong salt and alkali resistance. For vegetables such as lettuce with weak salt tolerance, potassium sulfate should be applied; if potassium chloride is required to be applied, it is necessary to reduce the amount and pay attention to watering. The application method of the base fertilizer is generally applied after the application of the soil or the ditching strip after the application or before the ridge is applied to the bottom of the ridge. (2) Topdressing; the amount of base fertilizer minus the amount of fertilizer applied is the amount of topdressing. The amount of top dressing can be applied in divided doses. Most of the top dressing types are quick-acting nitrogen and potassium fertilizers and a small amount of phosphate fertilizer. Generally, the fruit vegetables should be topdressed 3 to 4 times in the middle and the middle of the vigorous growth, and the nitrogen and potassium fertilizer should be applied at the same time after the ball is started. The root vegetables are absorbed during the root expansion period. The amount of nutrients is greatly increased. After 30 days of radish sowing, 70 to 80 days after the sowing of the potatoes, the potato should be concentrated in the period of 30-40 days after planting. The application of nitrogen fertilizer should not be too late to make the end of growth. The nitrogen content in the soil is low. It is easy to infect the disease. The green leafy vegetables should be attacked by a small amount of fertilizer and water when the leaves enter vigorous growth. The method of top dressing is generally carried out by applying a ditch or applying a ditch. It can also be applied with water, but the effect of fertilization in the soil is better. Regardless of the fertilization method, pay attention to watering after application. This article URL: Guiding Principles for Fertilization in Vegetable Garden Infusion Pump,Medical Infusion Pump,Hospital Equipment Infusion Pump,Hospital Device Medical Infusion Pump Puyang Degren Medical Equipment Co., Ltd. , https://www.degrenyuwei.com